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Model FSDR-512 meets the requirements for fire 

dampers, smoke dampers and combination fire 

smoke dampers established by:

National Fire Protection Association 

    NFPA Standards 80, 90A, 92A, 92B, 101 & 105

IBC  International Building Codes
New York City 

(MEA listing #260-91-M)

California State Fire Marshall
    

Listing #: 3225-0981:112 (fire)

     Listing #: 3230-0981:113 (smoke)

Application

Model FSDR-512 is a combination fire smoke damper with round style 

blades. The FSDR-512 has been qualified to 3000 fpm (15.2 m/s) and 

4 in. wg (1 kPa) for operation and dynamic closure in emergency fire 

smoke situations. Model FSDR-512 may be installed vertically (with 

blades running horizontal) or horizontally and is rated for airflow and 

leakage in either direction.

Ratings

UL 555 Fire Resistance Rating

 

 

Fire Rating:  1 1/2 Hour 

 

Dynamic Closure Rating:  Actual ratings are size dependant 

 

Maximum Velocity:  3000 fpm (15.2 m/s) 

 

Maximum Pressure:  4 in. wg (1 kPa) 

UL 555S Leakage Rating 
 

Leakage Class:  II 

 

Operational Rating:  Actual ratings are actuator dependant 

 

Maximum Velocity:

 

3000 fpm (15.2 m/s) 

 

Maximum Pressure:  4 in. wg (1 kPa)

 

 

 

Maximum Temperature:  350º F (177°C) —Depending on 

 

  actuator

Standard Construction

 

Frame/Sleeve:

 

20 ga. (1mm) galvanized steel round 

 

Blade:

 

Double skin galvanized steel (14 ga. 

 

 

[2mm] equivalent) round style blades 

 

Seal:

 

Extruded silicone rubber blade seals 

 

Axle:

 

1/2 in. (13mm) dia. plated steel 

 

Bearing:

 

Stainless steel sleeve type 

 

Fusible Link: 

UL listed 165ºF (74ºC) -not 304SS

Size Limitations

 

Minimum Size:

 

6 in. (152mm) diameter 

 

Maximum Size:

 

24 in. (610mm) diameter

Optional Features

• OCI (Open closed indication switches)
• 165º F (74°C), 212º F (100°C), and 350º F (177°C) RRL available
• TOR (remote override of 165º F (74°C) closure allows damper to 

perform smoke management functions during a fire emergency)

• Electric or pneumatic actuators to accomplish smoke management 

and system functions.

 

• One retainer plate required, additional retainer plate available.
• 14 ga. (2mm) or 16 ga. (1.5mm) frame/sleeve

FSDR-512

Combination Fire Smoke Damper

Round Steel Blade

UL 555S Leakage Class II

UL555 1 1/2  Hour Fire Resistance Rating

“UL CLASSIFIED (see complete marking on 

product)”

“UL CLASSIFIED to Canadian safety standards 

(see complete marking on product)”

 

Standard 555 (Listing #R13317) 

 

Standard 555S (Listing #R13447)

O 2 in.  Min.

1.00 in. Min. Typ.

Fasteners

Clamping

Screw

Nut

Retaining

Plate Assembly

Clamping Screw

Minimum Wall/Floor Opening

 = Nominal Dia. + 7/8 in. 

O 2 in.  Min.

1.00 in. Min. Typ.

Fasteners

Clamping

Screw

Nut

Retaining

Plate Assembly

Clamping Screw

Minimum Wall/Floor Opening

 = Nominal Dia. + 7/8 in. 

* Dimensions furnished approximately 1/8 in. (3mm) undersize.

D*

Installation instructions available at www.greenheck.com.

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